Mold.



No. 801,761. PATENTED OUT. 10, 1905. N. H. BATTJES.

MO'LD.

APPLICATION FILED SEPT. 19, 1904.

Pz'y. Z. 7 I 1 Fi i.

munzw a mum co. Pm1a-umcmummzusv msmmm u c.

NICHOLAS H. BATTJES, OF GRAND RAPIDS, MICHIGAN.

MOLD.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed September 19, 1904. Serial No. 225,141.

To foil whont it may concern..-

Be it known that I, NICHOLAS H. BA'ITJES, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Molds, of which the following is a specification.

My invention relates to improvements in molds for molding concrete building-blocks; and its objects are, first, to provide a mold that may be easily assembled or dismembered at the will of the operator; second, to provide a mold with which the face of a concrete block may be readily made of a finer quality and finish than the balance of the block and air-flues may at the same time be made parallel with the face of the blocks and the face may at the same time be colored to suit the taste of the customer, and, third, to provide a quick and convenient way of clamping molds of different widths between the supportingstakes. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a plan of the bottom plate of the mold. Fig. 2 is an elevation of one side of the mold. Figs. 3 and I are an elevation and a plan of the end plates of the mold. Fig. 5 is an end elevation of the mold and the clamping-frame. Figs. 6 and 7 are a plan and an edge view of the core-block. Fig. 8 shows a side and an end elevation of the clamp, and Fig. 9 is a plan of the mold fully assembled.

Similar letters refer to similar parts throughout the several views.

The face-plate A, which should be of metal, has-a depression a formed in its face to form a paneled face upon the block. This plate is placed upon the cross-bar of the clampingframe E, as in Fig. 5, and forms the bottom of the mold. The side plate B should be of metal and is provided with pins Z) and Z), the former of which are designed to enter small holes a in the bottom or face plates A, and the latter enter corresponding holes in the ends of the end plates C. The end plates 0 are formed with a heavy bead 0 upon one face and a corresponding bead c projecting exactly at right angles therewith. The bead 0 serves a double purpose: first, to hold the end plates exactly at right angles with the side plate B, and, second, to form a part of the air-passage in one surface of the block. When the end plates have been properly placed, the side piece B, which should be of wood and forms the board upon which the completed blocks are removed from the molds and are stored for curing, is placed between them and the clamping-stake, as in Fig. 5, and all is clamped to place, as with the eccentric lever Gr (which is pivoted to the stake at g) or with wedges, as indicated at f in Fig. 9, when the mold is ready to receive concrete mortar. It will be seen that by this arrangement the bottom plate A of the mold forms the face-plate of the block and the mortar is tamped directly down upon this plate. By this means I am enabled to attain several very desirable objects: First, I can make such figures upon this plate as I desire and readily impress them upon or into the face of the blocks; second, I can place a finer mortar in the bottom of the mold and a coarser mortar above, so that the face of the block may be made as smooth as desired, while the required strength may be attained by the use of broken stone or gravel in the balance of the block; third, if it is desired to color the face of the block the coloring-matter may be placed in the finer mortar and only a thin coat applied, and, fourth, by this construction the mold may be filled with mortar up to the lower edge of the beads c 0, when the core-block D can be placed thereon, as indicated in Fig. 9, and the mold filled to form a complete block, and at the proper time after removing the block from the mold the core-block can be drawn out, and the block will be complete, with vertical airpassages at c and D and horizontal air-passages at 0 (Z, or the openings formed by the beads 0 may be filled with concrete to form an air-tight joint between the ends of the blocks.

In Figs. 5 and 9 the clamping-stakes E are represented as solid or non-adjustable; butin Fig. 8 I have shown one of many forms of adjustable stakes. In this figure the stake E is shown with an open mortise having shouldered sides 6', that will fit over the upper rib of the supporting-beam E and is provided with a pivoted brace a, that may engage the surface of the beam, as at 6. This form is simply shown as an available one of the many forms of construction that may be used for this purpose. F represents skids or beams for supporting the stakes E while the mold is being assembled and filled. After the mold has been filled the stakes and mold are removed from the skids F and stored upon the side or follow board B, when the clamp may bottom plate A, the side plate B, the end plates G, and the core D may be removed, and the block is in condition to dry ready for use.

In Fig. 6I have cut the side of the coreblo'ck D away at y y to show the location of a bail d to facilitate drawing the coreblock out of the concrete block, as hereinbefore suggested.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

In a mold for concrete blocks, separate bottom, side and end plates, supporting-beams under the mold having serrations in the upper surface,stati0nary posts secured to said beams, movable posts supported on said beams, pawls Signed at Grand Rapids, Michigan, September, 1904:.

NICHOLAS H. BATTJES. In presence of-- C. V. GILLEY,

ITHIEL J. CILLEY. 

